<?php 
  
 header("content-type:text/html ; charset=utf-8");
 
 if(!empty($_POST))
 print_r($_POST);






 ?>







 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
 <html lang="en">
 <head>
 	<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
 	<title>06-02作业</title>
 </head>
 <body>
 	   <form action=""  method="post">
 	   	  <input type="text" name="username" value="啊哈哈">
 	   	  <input type="password" name="password" value="1456456">
 	   	  <input type="submit" value="提交">
 	   </form>
 </body>
 </html>